허무감이 · 허무감을
sense of emptiness, futility
Example
시험이 끝나자 갑자기 허무감이 밀려왔어요.
When the exam was over, a sudden feeling of emptiness washed over me.
Word parts
허 empty+무 nothing+감 feeling
Literally 'feeling of emptiness and nothingness'.
Good to know
Typical verbs: 허무감이 들다 or 허무감을 느끼다 (to feel empty).